Please research and write a three to four page summary on the topic of using lev

Please research and write a three to four page summary on the topic of using leverage in business INCLUDING extra exhibits beyond the paper and also citing all sources.
Paper should be structured as follows:
Overview/Introduction (include brief descriiption of what leverage is)
Advantages of leverage
Disadvantages of leverage
How to determine optimal amount of leverage
Choose one of the following firms (all are in a group called the “DOLTS – Debt-Ridden Over-leveraged Traps”) and discuss their current level of debt as well as suggest what a reasonable level may be. Please include reasons to backup your responses. Also include in your answer detailed rationale as to why they may have such a high level of debt. (such as very capital intensive with lots of fixed property plant and equipment)
Anadarko Petroleum (APC)
Freeport – McMoRan ( FCX)
Petrobras (PBR)
Conclusion/Summary
PLEASE PROVIDE REASONS TO BACK UP YOUR RESPONSE. Also include in your answer A DETAILED RATIONALE why they may have such a high level of debt.
All papers must be professionally formatted and written. (Single spaced, block format (no indenting for paragraphs) using headings for the sections and organized well)
Write the papers as if I am a client and you were hired to do a complete analysis on the firm and report back.